Why is a food chain is the simplest model of energy flow between trophic levels in an ecosystem? because it represents several pathways of energy flow
because it is more complex than a food web
because it represents only one pathway of energy flow
because it only considers producers and primary consumers

The typo in the quiz is confusing me a lot lol

false because ozone (o3) depletion does not cause global warming, but both of these environmental problems have a common cause: human activities that release pollutants into the atmosphere altering it.

global warming is caused primarily by putting too much carbon dioxide into the atmosphere when coal, oil, and natural gas are burned to generate electricity or to run our cars.

explanation:

to this one it would be receptive field

answer; the code in musculoskeletal system subsection is associated with deep tissue possibly to the bone;